Why does the data capture waveform appear discontinuous?

I implemented a 1000 Hz sine wave generator on a ZedBoard (50 MHz clock) with a sampling period of 20 ns. However, as shown in the attached figure, the data capture result does not display a continuous staircase waveform but rather appears discontinuous. Why does this phenomenon occur?

Answer 1

[덕용]

This issue was resolved by adjusting the output data type from 32bits to 16bits.

Maybe, it seem that the data capture fearture on the Zedboard only suports widths of 16 bits or less.